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On Sunday night, Sam Smith (and fellow songwriter Jimmy Napes) took home an award for Best Original Song, and Smith gave a beautiful, albeit misinformed, speech about being the first openly gay Academy Award winner.

"I read an article a few months ago by Sir Ian McKellen, and he said no openly gay man had won an Oscar," Smith began. "If this is the case — even if it isn't the case — I want to dedicate this to the LGBT community around the world. I stand here tonight as a proud gay man, and I hope that we can all stand as equals one day."

Smith's tribute to the LGBT community was praised by many, regardless of whether or not he was actually the first gay man to win an Oscar — the list also includes Elton John, Stephen Sondheim and Howard Ashman for Best Original Song, as well as John Corigliano (Best Original Score) — because the message was bigger than him.

However, not everyone was impressed by the speech. In fact, Dustin Lance Black, in particular, was very unimpressed.

Taking to Twitter on Sunday, Black, who won the Oscar in 2009 for Best Original Screenplay for Milk, took aim at Smith telling him that he was not only misinformed, but also accused him of hitting on his fiancé, British diver Tom Daley.

Smith did make a mistake with his speech, and it was fair that he was corrected for it, but Black took things one step too far when he chastised Smith and turned the gaffe into something personal. Also, it doesn't appear that Smith's speech was about wanting to be the first— as proved by his candid, NSFW reaction when he discovered that he wasn't — but rather to uplift and bring awareness to the LGBT community.

There is no denying that Black is an extremely talented man who is an advocate for the LGBT community himself, but his tweet has, unfortunately, detracted from the powerful message that Smith was sharing. And many Twitter users have reacted to the tweet with great disappointment.